Repair-tool



R. D. RADCLIFFE. REPAIR TOOL.

APPLICATION FILED DEC-7.1911.

Patented May 30,1916.

.2 SHEETS-SHEET I.

n l M58858 M R. D. RADCLIFFE.

REPAIR TOOL.

AFPHC ATION FILD DEC- 7, 19H.

1 ,1 85,24.- 1 Patented May 30, 1916.

2 SHEETS-SHEET 2.

FL flr, Fig.5.

hearing against rigid portions of the motor H 1 aoanar n. aanomhhn, or new ROCHELLE, new some aerate-moon,

To all (whom it ma concemrv Be'it known that-I, Roamr'jl) a citizen of'the United Stateseand resident of New ldochelle, intlth'e merge .Westcheater and State ofihlefi tYor haye in vented certain new andliiseful Imovm$nts I the subject matter of this invention applied thereto; Fig. 2 is a similar view showing the in Repair-Tools, of whiz: the specification.

i. ow The 7 'present inventio tools-intended fornse'in rel es from motors.

,hsm or 'it ciiBin gpand against cups, or fis mfilar "elements,fseiired to the valve. stems :in propeiggosition; When. it is desired to removefthe yalves',it is necessary to release thefsain frohi the pressure of the springs applied thereto. Various devices have been proposed heretofore for this purpose, comprising-usually a plurality of ievers for com- 'pi'essing' the-valve spring. vThese devices are-however, too complicated and, on the other'hand,-necessitate the removing of the I p in from the; valvestem When, there .iwill, it match s: t

"foreythespring is, after the repairing opf fleration, again to be applied to the stem,

' pemenced.

ime' is Wasted and great, trouble (exthe resent inrention and a bient tool which e 'izalve,'hold the spring "sin object. is to P WQQ a i compressed in age? applied-f d), the motor aiter the grinding op:

oration. f l

With these and other ob ects in view, which will more fully appear as the nature of the invention is better understood, the 4 same consists in the combination, arrange;-

' ment and construction of parts hereinafter fully described, pointed out iii-the appended.

claim and illustrated in the accompanying drawings, it being understood that withinthe scope of theolaim many changes may be vention.

Specification of Letters Patent.

mourns,

osit'ion relati'i eto the valve easing, so'that t e valve stem and the valve thereon can beeasily and convenientlyv means of the spring 18 On'eof the man possible exnbodinients of the invention is'illustrated in the accompanymgdrawings, in which Figure it 's a vertical sectional 'view through the valve chamber and adjacent parts of a motor, showing the tool forming parts in other positions; Fig. 3 is a plan v1ew, partly in section, of'a detail of construct-ion; F 4 is a front elevation of the tool; Fig. 5 s as de elevation thereof; Fig. 6 is a plan V ew of thesame; Fig. 7 is a sec- Patented May 3%,19185, 'ax plieationfiledHede nber7,1911.'3eria11o.66e,5o3.

tion taken on line 7'7 of Fig. 4; and Fig. 8 is a plan View of the blank of which the tool isformedv w engine, having a valve seat 11 for the valve 12, of the puppet type, which is attached to a a stem 13, The stem' passes through the usual guide 14, and'cerries' upon its lower end a cup 15, which is held in position upon the stem by means'of a locking Washer. 16, I I engaging an annularrecessl'? in the stem 13.

-A spring, 18 bears against a shoulder 1911pon Y the guide 14- and against the cup. 15. The

locking washer 16 is normally located" within a recess l5sin the cup- 15, thereby being prevented from disengaging itself from-thestem 13.

The cane shaft of the engine is denoted by g the numeral 20, and the cam by the numeral This cam-engages the stem operating 21. pin 22, guided in its movement by an ex tension 22 of the motor frame, and kept by inengagement with the'stem ldi The 0 oration and functionof the parts describe so far is Well known, and these parts have been described only to illustrate the manner of using the improved tool.

The repair tool s made, for instance, of sheet metal, referablyby stampingope a: liflOlS. The I) ank consists ofa quadrang "at be shie d is ereof extensions 24, 24. This blank is bent to form a substantiallytubular mem: her in 'such a manner that the projections 24, 24 are arranged at a distance from each other which is greater than the diameter of the locking washer 16, The body portion of the blank, when bent to its proper form, ex-

ortion 23, having'upon two parallel .100

than the diameter of the guide 22 of the stem operating pin 22.

WVhile herein the tool has been described as being made of sheet metal, it is obvious that it may be cast just as well, or it may be madeof any other suitable rigid ma terial.

The operation of this tool is as follows: Vilhen the valve with its stem are to be removed from the motor for the purpose of regrinding said valve and seat, the cam 21 is brought into the position shown in Fig. 1 of the drawings, whereby the valve 12 will be fully lifted from its seat; The spring 18 is thereby compressed. The

20 height of the tool. corresponds. to the distance between the lowermost plane of the cup 15 and the uppermost plane of that portion of the engine frame through which the operating stem protrudes. The tool can thereby easily be placed. in concentric relation to the valve operating pin 22 to support the cup 15, When now the cam shaft is turned to allow the valve 12 to occupy the valve seat, the repair tool will hold the spring in its compressed position, as clearly shown in Fig. 2 of the drawings, and permit thereby'the withdrawal of the locking washer 16 from the annular recess 17 in the valve stem 13'. The valve stem is thereby released, and can be easily disengaged from its guide 14: for repair purposes. It will be observed that the repair tool keeps, even after the valve and its stem have been re moved from the engine, the cup 15 in con- 40 centric relation to the longitudinal axis of the stem operating pin 22, and holds the spring 18 compressed. When the seat and the valve have been reground, the valve is -placed 1n position upon the valve casing,

the locking Washer 16 seated in the recess 17 of the stem, the cam shaft rotated in order to lift the valve from its seat, after which the tool is withdrawn, leaving thereby .and its operating parts will permit, the cup 15 will be properly supported in a substantially horizontal plane, and, since the body portion of the tubular tool extends over an angular distance which is considerably greater than 180, the repair tool will be.

held in a vertical position, in other words it will not be tilted over by the pressure of the spring 18 exerted thereon. The result of this will be that the spring will be maintained compressed, permitting thereby the valve stem to be conveniently placed in po-- sition upon the valve casing after the repairs have been finished. It will be noted that the pipes or other obstructions on or adjacent thevalve stem do not prevent the insertion of the repairtool, the latter being of'small dimensions only, in fact smaller in diameter than the cup 15.

While herein the device has been described in use upon a. particular type of valve operating mechanism, it is obvious that the same can be made use of upon all most every type of internal. combustion engines, the only thing to be changed being the height of the tool and the distance between the extensions 24, 2+ thereof. This distance might be very small, if the cup 15 is held upon the stem by means of a cot ter pin.

What I claim is Arepair tool of the character described comprising a tubular body entirely open at its ends and having a slot running the length thereof, said slot being narrowed at one end.

Signed at New York, in the county of New York and State of New York, this 10th day of October, A. D. 1911.

, ROBERT D. R ADCLIFFE.

lVitnesses: I

SIGMUNI) Hnuzoc, S. BIRNBAUM. 

